Thank you, I bought the salt just to have on hand incase needed, but I see now if you need, than QT the fish not salt in tank...well that will be added to the first aid kit
yes the check valve was to prevent back flow into airpump, i guess incase of power outages ( which we have lots), it was cheap enough but I don't like the restricted airflow, then my filter doesn't do its job. We wont be adding anymore deco,plants or tank mates so next time he will stay in for water change!!
I don't know whats more enjoyable to watch my betta or the shrimp, they are so cool.